BioScience Trends
Online ISSN : 1881-7823
Print ISSN : 1881-7815
ISSN-L : 1881-7815
Original Articles
A high-salinity solution with calcium chloride enables RNase-free, easy plasmid isolation within 55 minutes
Noboru SasagawaMichinori KoebisYoji YonemuraHiroaki MitsuhashiShoichi Ishiura
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2013 Volume 7 Issue 6 Pages 270-275


We dramatically improved a plasmid-isolation protocol based on the popular alkaline sodium dodecyl sulfate plasmid isolation method. Our modified method provides significant time and cost savings. We used a modified solution during the neutralization step, which allowed us to skip several subsequent handling steps, saving a great amount of time. The plasmids purified by this method were of high quality, and the optical density ratio 260 and 280 was approximately 1.8. Plasmid DNA isolated by our method was of sufficient quality to perform subsequent restriction enzyme cuts and other downstream experiments, including budding yeast transformation, cultured cell transfection, and Caenorhabditis elegans injection experiments.

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© 2013 International Research and Cooperation Association for Bio & Socio-Sciences Advancement
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